<template>
    <el-row class="login-container">
        <el-col :lg="16" :md="12" class="left">
            <div>
                <div>卡券管理系统</div>
                <div>欢迎登录卡券后台管理系统！！！</div>
            </div>
        </el-col>
        <el-col :lg="8" :md="12" class="right">
            <h2 class="title">欢迎回来</h2>
            <div>
                <span class="line"></span>
                <span>账号密码登录</span>
                <span class="line"></span>
            </div>
            <el-form ref="formRef" :rules="rules" :model="form" class="w-[250px]">
                <el-form-item prop="username">
                    <el-input v-model="form.username" placeholder="请输入账号">
                        <template #prefix>
                            <el-icon>
                                <User />
                            </el-icon>
                        </template>
                    </el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" show-password v-model="form.password" placeholder="请输入密码">
                        <template #prefix>
                            <el-icon>
                                <Lock />
                            </el-icon>
                        </template>
                    </el-input>
                </el-form-item>
                <el-form-item>
                    <el-button round class="w-[250px]" type="primary" :loading="loading" @click="onSubmit">登 录</el-button>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<script setup>
import { ref, reactive, onMounted, onBeforeMount } from 'vue'
import { useRouter } from 'vue-router'
import { useStore } from 'vuex'
import { toast } from '~/composables/util'


const router = useRouter()
const store = useStore()
// do not use same name with ref
const form = reactive({
    username: "",
    password: ""
})

const rules = {
    username: [
        { 
            required: true, message: '用户名不能为空！！', trigger: 'blur' 
        }
        ],
    password: [
        { 
            required: true, message: '密码不能为空！！', trigger: 'blur' 
        }
    ]
}

const formRef = ref(null)
const loading = ref(false)

const onSubmit = () => {
    formRef.value.validate((valid)=>{
        if(!valid){
            return false
        }
        loading.value = true

        store.dispatch("login", form).then(res=>{
            toast("登录成功")
            router.push("/")

        }).finally(()=>{
            loading.value = false

        
    })
    })
}


function onKeyUp(e){

    if(e.key == "Enter") onSubmit()
    
}


onMounted(()=>{
    document.addEventListener("keyup", onKeyUp)
})
onBeforeMount(()=>{
    document.removeEventListener("keyup", onKeyUp)
})




</script>

<style scoped>

.login-container {
    @apply min-h-screen bg-indigo-500;

}

.login-container .left,
.login-container .right {
    @apply flex items-center justify-center;
}

.login-container .right {
    @apply bg-light-50 flex-col;
}

.left>div>div:first-child {
    @apply font-bold text-5xl text-light-50 mb-4;
}

.left>div>div:last-child {
    @apply text-gray-200  text-sm;
}

.right .title {
    @apply font-bold text-3xl text-gray-800;
}

.right>div {
    @apply flex items-center justify-center my-5 text-gray-300 space-x-2;
}

.right .line {
    @apply h-[1px] w-16 bg-gray-200;
}
</style>